The standard Google Gmail web interface makes very heavy use of Javascript. iMacros can fully automate it, but it requires the use of WINCLICK to automate certain clicks. If you prefer to use the TAG command instead, there is a good workaround:

Simply switch the Google Mail view from standard to basic HTML.

Note: The basic HTML view is a little different than what you're used to because the following features aren't available: -Filter creation -Settings (Including Forwarding and POP) -Spell checker -Keyboard shortcuts -Address auto-complete -Custom From addresses